<nav class="navbar navbar-default">
  <div class="container">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <a class="navbar-brand" href="<?=site_url()?>"><img style="height:180%;" src="<?=base_url();?>public/img/logo.png">吴松的blog后台</a>
    </div>
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav ">
    	
        <li <?php if($this->page_name=='article'){?> class="active" <?php }?>><a href="<?=site_url('/admin/article/index');?>">文章管理</a></li>
        <li <?php if($this->page_name=='catalog'){?> class="active" <?php }?>><a href="<?=site_url('/admin/catalog/index');?>">分类管理</a></li>

      </ul>
    </div>
  </div>
</nav>